Cara upload gambar(file) laravel 8 [Eloquent]

//View 
<form action="{{ route('product-galleries.store') }}" method="POST" enctype="multipart/form-data">
                @csrf
                <div class="form-group">
                    <label for="name" class="form-control-label">Nama Barang</label>
                    <select name="products_id" class="form-control @error('products_id') is-invalid @enderror" id="">
                        @foreach ($products as $product)
                            <option value="{{ $product->id }}">{{ $product->name }}</option>
                        @endforeach
                    </select>
                    @error('name')
                        <div class="text-muted">{{ $message }}</div>
                    @enderror
                </div>
                <div class="form-group">
                    <label for="photo" class="form-control-label">Foto Barang</label>
                    <input required type="file" accept="image/*" name="photo" value="{{ old('photo') }}"
                        class="form-control @error('photo') is-invalid @enderror">
                    @error('photo')
                        <div class="text-muted">{{ $message }}</div>
                    @enderror
                </div>
                <div class="form-group">
                    <div class="d-grid gap-2">
                        <button class="btn btn-primary btn-block" type="submit">Tambah Foto Barang</button>
                    </div>
                </div>
</form>

//Controller
public function store(ProductGalleryRequest $request)
    {
        $data = $request->all();
        $data['photo'] = $request->file('photo')->store('assets/product', 'public');

        ProductGallery::create($data);
        return redirect()->route('product-galleries.index');
    }

//Model
protected $fillable = [
        'products_id', 'photo', 'is_default'
    ];

    protected $hidden = [
        
    ];

    public function product()
    {
        return $this->belongsTo(Product::class, 'products_id', 'id');
    }

    public function getPhotoAttribute($value)
    {
        return url('storage/' . $value);
    }